> For the complete documentation index, see [llms.txt](https://docs.mapbox.com/mapbox-gl-js/llms.txt)
# Animate a marker
Animate the position of a [`Marker`](https://docs.mapbox.com/mapbox-gl-js/api/markers/#marker) by updating its location on each frame.
> Example code:
**JavaScript**
```html
Animate a marker
```
**React**
```jsx
import React, { useEffect, useRef } from 'react';
import * as mapboxgl from 'mapbox-gl/esm';
import 'mapbox-gl/dist/mapbox-gl.css';
const MapboxExample = () => {
const mapContainerRef = useRef();
const mapRef = useRef();
useEffect(() => {
mapRef.current = new mapboxgl.Map({
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
accessToken: 'YOUR_MAPBOX_ACCESS_TOKEN',
container: 'map',
// Choose from Mapbox's core styles, or make your own style with Mapbox Studio
style: 'mapbox://styles/mapbox/standard',
center: [0, 0],
zoom: 2
});
// Add a new Marker.
const marker = new mapboxgl.Marker({
color: '#F84C4C' // color it red
});
// Define the animation.
function animateMarker(timestamp) {
const radius = 20;
/*
Update the data to a new position
based on the animation timestamp.
The divisor in the expression `timestamp / 1000`
controls the animation speed.
*/
marker.setLngLat([
Math.cos(timestamp / 1000) * radius,
Math.sin(timestamp / 1000) * radius
]);
/*
Ensure the marker is added to the mapRef.
This is safe to call if it's already added.
*/
marker.addTo(mapRef.current);
// Request the next frame of the animation.
requestAnimationFrame(animateMarker);
}
// Start the animation.
requestAnimationFrame(animateMarker);
// Clean up by removing marker and map on component unmount
return () => {
marker.remove();
mapRef.current.remove();
};
}, []);
return ;
};
export default MapboxExample;
```